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Loosen SH, Mertens A, Klein I, Leyh C, Krieg S, Kandler J, Luedde T, Roderburg C, Kostev K. Association between Helicobacter pylori and its eradication and the development of cancer. BMJ Open Gastroenterol 2024; 11:e001377. [PMID: 39181567 PMCID: PMC11344509 DOI: 10.1136/bmjgast-2024-001377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Accepted: 08/02/2024] [Indexed: 08/27/2024] Open
Abstract
BACKGROUND Helicobacter pylori (H. pylori) is a gram-negative gastrointestinal pathogen that colonises the human stomach and is considered a major risk factor for gastric cancer and mucosa-associated lymphoid tissue lymphoma. Furthermore, H. pylori is a potential trigger of a wide spectrum of extragastric cancer entities, extraintestinal chronic inflammatory processes and autoimmune diseases. In the present study, we evaluated the association between H. pylori infection and its eradication with the development of subsequent gastrointestinal and non-gastrointestinal cancer. METHODS We identified 25 317 individuals with and 25 317 matched individuals without a diagnosis of H. pylori from the Disease Analyzer database (IQVIA). A subsequent cancer diagnosis was analysed using Kaplan-Meier and conditional Cox-regression analysis as a function of H. pylori and its eradication. RESULTS After 10 years of follow-up, 12.8% of the H. pylori cohort and 11.8% of the non-H. pylori cohort were diagnosed with cancer (p=0.002). Results were confirmed in regression analysis (HR: 1.11; 95% CI 1.04 to 1.18). Moreover, a non-eradicated H. pylori status (HR: 1.18; 95% CI 1.07 to 1.30) but not an eradicated H. pylori status (HR: 1.06; 95% CI 0.97 to 1.15) was associated with a subsequent diagnosis of cancer. In subgroup analyses, H. pylori eradication was negatively associated with bronchus and lung cancer (HR: 0.60; 95% CI 0.44 to 0.83). CONCLUSION Our data from a large outpatient cohort in Germany reveal a distinct association between H. pylori infection and the subsequent development of cancer. These data might help to identify patients at risk and support eradication strategies in the future.
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Affiliation(s)
- Sven Heiko Loosen
- Department of Gastroenterology, Hepatology and Infectious Diseases, University Hospital of Düsseldorf, Düsseldorf, Germany
| | - Alexander Mertens
- Department of Gastroenterology, Hepatology and Infectious Diseases, University Hospital of Düsseldorf, Düsseldorf, Germany
| | | | - Catherine Leyh
- Department of Gastroenterology, Hepatology and Infectious Diseases, University Hospital of Düsseldorf, Düsseldorf, Germany
| | - Sarah Krieg
- Department of Gastroenterology, Hepatology and Infectious Diseases, University Hospital of Düsseldorf, Düsseldorf, Germany
| | - Jennis Kandler
- Department of Gastroenterology, Hepatology and Infectious Diseases, University Hospital of Düsseldorf, Düsseldorf, Germany
| | - Tom Luedde
- Department of Gastroenterology, Hepatology and Infectious Diseases, University Hospital of Düsseldorf, Düsseldorf, Germany
| | - Christoph Roderburg
- Department of Gastroenterology, Hepatology and Infectious Diseases, University Hospital of Düsseldorf, Düsseldorf, Germany
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Zhao C, Liu X, Tan H, Bian Y, Khalid M, Sinkkonen A, Jumpponen A, Rahman SU, Du B, Hui N. Urbanization influences the indoor transfer of airborne antibiotic resistance genes, which has a seasonally dependent pattern. ENVIRONMENT INTERNATIONAL 2024; 185:108545. [PMID: 38447454 DOI: 10.1016/j.envint.2024.108545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 03/08/2024]
Abstract
Over the last few years, the cumulative use of antibiotics in healthcare institutions, as well as the rearing of livestock and poultry, has resulted in the accumulation of antibiotic resistance genes (ARGs). This presents a substantial danger to human health worldwide. The characteristics of airborne ARGs, especially those transferred from outdoors to indoors, remains largely unexplored in neighborhoods, even though a majority of human population spends most of their time there. We investigated airborne ARGs and mobile genetic element (MGE, IntI1), plant communities, and airborne microbiota transferred indoors, as well as respiratory disease (RD) prevalence using a combination of metabarcode sequencing, real-time quantitative PCR and questionnaires in 72 neighborhoods in Shanghai. We hypothesized that (i) urbanization regulates ARGs abundance, (ii) the urbanization effect on ARGs varies seasonally, and (iii) land use types are associated with ARGs abundance. Supporting these hypotheses, during the warm season, the abundance of ARGs in peri-urban areas was higher than in urban areas. The abundance of ARGs was also affected by the surrounding land use and plant communities: an increase in the proportion of gray infrastructure (e.g., residential area) around neighborhoods can lead to an increase in some ARGs (mecA, qnrA, ermB and mexD). Additionally, there were variations observed in the relationship between ARGs and bacterial genera in different seasons. Specifically, Stenotrophomonas and Campylobacter were positively correlated with vanA during warm seasons, whereas Pseudomonas, Bacteroides, Treponema and Stenotrophomonas positively correlated with tetX in the cold season. Interstingly, a noteworthy positive correlation was observed between the abundance of vanA and the occurrence of both rhinitis and rhinoconjunctivitis. Taken together, our study underlines the importance of urbanization and season in controlling the indoor transfer of airborne ARGs. Furthermore, we also highlight the augmentation of green-blue infrastructure in urban environments has the potential to mitigate an excess of ARGs.
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Affiliation(s)
- Chang Zhao
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Rd., 200240, Shanghai, China; Shanghai Yangtze River Delta Eco-Environmental Change and Management Observation and Research Station, Ministry of Science and Technology, Ministry of Education, 800 Dongchuan Rd, 200240, Shanghai, China; Shanghai Urban Forest Ecosystem Research Station, National Forestry and Grassland Administration, 800 Dongchuan Rd., 200240, Shanghai, China.
| | - Xinxin Liu
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Rd., 200240, Shanghai, China; Faculty of Biological and Environmental Sciences, University of Helsinki, Niemenkatu 73, Lahti 15140 Finland.
| | - Haoxin Tan
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Rd., 200240, Shanghai, China.
| | - Yucheng Bian
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Rd., 200240, Shanghai, China.
| | - Muhammad Khalid
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, Wenzhou, China.
| | - Aki Sinkkonen
- Faculty of Biological and Environmental Sciences, University of Helsinki, Niemenkatu 73, Lahti 15140 Finland; Horticulture Technologies, Unit of Production Systems, Natural Resources Institute Finland, Turku, Finland.
| | - Ari Jumpponen
- Division of Biology, Kansas State University, Manhattan, KS, USA.
| | - Saeed Ur Rahman
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Rd., 200240, Shanghai, China.
| | - Baoming Du
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Rd., 200240, Shanghai, China.
| | - Nan Hui
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Rd., 200240, Shanghai, China; Faculty of Biological and Environmental Sciences, University of Helsinki, Niemenkatu 73, Lahti 15140 Finland.
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Shen Z, Qiu B, Chen L, Zhang Y. Common gastrointestinal diseases and chronic obstructive pulmonary disease risk: a bidirectional Mendelian randomization analysis. Front Genet 2023; 14:1256833. [PMID: 38046045 PMCID: PMC10690629 DOI: 10.3389/fgene.2023.1256833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 10/26/2023] [Indexed: 12/05/2023] Open
Abstract
Background: Observational studies suggest an association between gastrointestinal diseases and chronic obstructive pulmonary disease (COPD), but the causal relationship remains unclear. Methods: We conducted bidirectional Mendelian randomization (MR) analysis using summary data from genome-wide association study (GWAS) to explore the causal relationship between common gastrointestinal diseases and COPD. Gastrointestinal diseases included gastroesophageal reflux disease (GERD), peptic ulcer disease (PUD), irritable bowel syndrome (IBS), Crohn's disease (CD), ulcerative colitis (UC), functional dyspepsia (FD), non-infectious gastroenteritis (NGE), and constipation (CP). Significant MR analysis results were replicated in the COPD validation cohort. Results: Bidirectional MR analysis supported a bidirectional causal relationship between GERD and COPD, and COPD was also found to increase the risk of IBS and CP. Our study also provided evidence for a bidirectional causal relationship between PUD and COPD, although the strength of evidence may be insufficient. Furthermore, we provided evidence that there is no causal association between CD, UC, FD, NGE, and COPD. Conclusion: This study offers some evidence to clarify the causal relationship between common gastrointestinal diseases and COPD. Further research is needed to understand the underlying mechanisms of these associations.
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Affiliation(s)
- Zixiong Shen
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun, China
| | - Binxu Qiu
- Department of Gastrointestinal Surgery, The First Hospital of Jilin University, Changchun, China
| | - Lanlan Chen
- Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Changchun, China
| | - Yiyuan Zhang
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun, China
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Chen M, Huang X, Gao M, Yang Z, Fang Z, Wei J, Wu B. Helicobacter pylori promotes inflammatory factor secretion and lung injury through VacA exotoxin-mediated activation of NF-κB signaling. Bioengineered 2022; 13:12760-12771. [PMID: 35603777 PMCID: PMC9275868 DOI: 10.1080/21655979.2022.2071011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Previous reports have shown that Helicobacter pylori (H. pylori) infection is associated with respiratory diseases. However, the pathogenesis remains unclear. Vacuolating cytotoxin A (VacA) is a major H. pylori exotoxin. In this study, we investigated the signaling pathways involved in the inflammatory response to H. pylori infection and VacA. Mice were treated with H. pylori and VacA, and histopathological analysis of lung tissues was performed using hematoxylin-eosin, Masson’s trichrome, and periodic acid Schiff staining. The secretion of inflammatory cytokines was evaluated by enzyme-linked immunosorbent assay. The expression of VacA, nuclear factor-kappa B (NF-κB), and p65 NF-κB was analyzed by Western blotting and immunofluorescence. Cell proliferation and apoptosis were assessed using the MTS assay and flow cytometry, respectively. In mice, H. pylori infection and VacA treatment promoted the secretion of the inflammatory factors interleukin 1β (IL-1β), tumor necrosis factor α (TNF-α), IL-6, and IL-8, increased p65 NF-κB protein phosphorylation, and induced lung injury. Furthermore, H. pylori infection promoted VacA production. In an in vitro cell model, VacA treatment significantly suppressed the proliferation of WI-38 and BEAS-2B cells, promoted apoptosis, induced TNF-α, IL-1β, IL-6, and IL-8 secretion, and promoted p65 NF-κB protein phosphorylation and NF-κB nuclear transfer. The NF-κB inhibitor BAY11-7082 alleviated VacA-induced inflammation and apoptosis and increased cell viability. In conclusion, VacA promotes the secretion of inflammatory factors and induces lung injury through NF-κB signaling.
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Affiliation(s)
- Meizhu Chen
- Department of Pulmonary and Critical Care Medicine (PCCM), The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Xueping Huang
- Department of Gastroenterology, Fujian Provincial Hospital, Fuzhou, China
- Department of Gastroenterology, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Minzhao Gao
- Department of Gastroenterology, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Zhipeng Yang
- Department of Gastroenterology, Dongguan Tungwah Hospital, DongGuan, China
| | - Zhaoxiong Fang
- Department of Gastroenterology, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Jinqi Wei
- Department of Gastroenterology, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Baihe Wu
- Department of Gastroenterology, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
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He M, Zheng Y, Ma A, Zhang C, Yu Y, Wang H, Chen Y, Xiang M, Tao K, Shen J. Helicobacter pylori is associated with weakened pulmonary function and reduced incidence of allergic conditions in patients with chronic cough. Exp Ther Med 2020; 20:47. [PMID: 32952638 PMCID: PMC7480139 DOI: 10.3892/etm.2020.9176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 06/10/2020] [Indexed: 12/05/2022] Open
Abstract
The present study aimed to investigate the potential association between Helicobacter pylori (a H. pylori) positive state and chronic cough. A clinical observational study with systematic analysis was performed, including 278 patients with complaints of chronic cough and 148 healthy controls. a H. pylori positive state was present in 61.2% of the patients in the chronic cough group and 68.9% in the chronic refractory cough group, as opposed to 43.9% in the control group. There was a significant improvement in 65.5% of the patients with chronic refractory cough following successful a H. pylori eradication therapy. In addition, patients with chronic cough exposed to a H. pylori exhibited decreased pulmonary function with a decrease in forced expiratory volume in 1 sec by 84 ml, a decrease in the forced vital capacity by 53 ml and a decrease in maximal vital capacity by 46 ml. The difference was even more obvious in the chronic refractory cough group. The allergy status differed significantly according to age between a H. pylori-positive and -negative cases in the cough variant asthma and allergic cough groups. Among patients aged <40 years, a H. pylori-positive cases had a lower prevalence of atopy and lower total serum immunoglobin E levels compared with a H. pylori-negative cases. However, there was no significant association between a H. pylori status and C-reactive protein levels, erythrocyte sedimentation rate or eosinophil count in the peripheral blood. In conclusion, the present study demonstrated that a H. pylori infection may be a factor associated with chronic cough and it may be associated with a decline in pulmonary function and reduced incidence of allergic conditions. Thus, a H. pylori may represent a target for the treatment of chronic cough.
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Affiliation(s)
- Meng He
- Department of Respiratory Medicine, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Zhejiang University School of Medicine, Shaoxing, Zhejiang 312000, P.R. China
| | - Yuanyuan Zheng
- Department of Gastroenterology, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Zhejiang University School of Medicine, Shaoxing, Zhejiang 312000, P.R. China
| | - A'Huo Ma
- Department of Gastroenterology, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Zhejiang University School of Medicine, Shaoxing, Zhejiang 312000, P.R. China
| | - Chunyi Zhang
- Department of Respiratory Medicine, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Zhejiang University School of Medicine, Shaoxing, Zhejiang 312000, P.R. China
| | - Yuefang Yu
- Department of Respiratory Medicine, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Zhejiang University School of Medicine, Shaoxing, Zhejiang 312000, P.R. China
| | - Hua Wang
- Department of Respiratory Medicine, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Zhejiang University School of Medicine, Shaoxing, Zhejiang 312000, P.R. China
| | - Yefeng Chen
- Department of Respiratory Medicine, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Zhejiang University School of Medicine, Shaoxing, Zhejiang 312000, P.R. China
| | - Min Xiang
- Department of Respiratory Medicine, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Zhejiang University School of Medicine, Shaoxing, Zhejiang 312000, P.R. China
| | - Kelong Tao
- Department of Gastrointestinal Surgery, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Zhejiang University School of Medicine, Shaoxing, Zhejiang 312000, P.R. China
| | - Juxin Shen
- Department of Respiratory Medicine, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Zhejiang University School of Medicine, Shaoxing, Zhejiang 312000, P.R. China
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Zendehdel A, Roham M. Role of Helicobacter pylori infection in the manifestation of old age-related diseases. Mol Genet Genomic Med 2020; 8:e1157. [PMID: 32067423 PMCID: PMC7196471 DOI: 10.1002/mgg3.1157] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 11/10/2019] [Accepted: 01/11/2020] [Indexed: 12/13/2022] Open
Abstract
Helicobacter pylori is one of the most prevalent infection worldwide. It affects individuals of different age groups. Elderly people tend to resist eradication treatment and worsening of infection can lead to several gastric and non-gastric pathologies. Aging-associated cellular and molecular alteration can increase the risk of other pathologies such as osteoporosis, Alzheimer's disease, Parkinson's disease, respiratory and renal dysfunction, and cancer in geriatric patients, more than other age groups. This review article highlights some of the most common old age diseases and the role of H. pylori infection as a risk factor to worsen the conditions, presented by the molecular evidences of these associations. These studies can help clinicians to understand the underlying pathogenesis of the disease and identify high-risk patients, aiding clearer diagnosis and treatment.
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Affiliation(s)
- Abolfazl Zendehdel
- Department of Geriatric MedicineZiaeian HospitalTehran University of Medical SciencesTehranIran
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Shi Y, Duan JY, Liu DW, Qiao YJ, Han QX, Pan SK, Tang L, Cai GY, Chen XM, Liu ZS, Zhu HY. Helicobacter pylori Infection is Associated with Occurrence of Proteinuria in Type 2 Diabetes Patients: A Systemic Review and Meta-Analysis. Chin Med J (Engl) 2018; 131:2734-2740. [PMID: 30425200 PMCID: PMC6247588 DOI: 10.4103/0366-6999.245269] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Type 2 diabetes (T2DM) patients are susceptible to Helicobacter pylori (HP), and it has been reported that the occurrence of proteinuria is associated with HP infection in T2DM patients; however, this view remains controversial. This meta-analysis aimed to explore the association between HP infection and the occurrence of proteinuria in T2DM patients. In addition, we hope to provide some recommendations to readers in clinical or related fields. METHODS Our meta-analysis was conducted with the methodology of the Cochrane Collaboration. Search strategies were formulated by relevant professionals. Case-control studies that compared the occurrence of proteinuria in T2DM patients with and without HP infection were involved in our meta-analysis. Relevant English or Chinese studies were searched on online databases before 2018, including PubMed, the Cochrane library, Medline, Google Scholar, the China National Infrastructure, and Wanfang database. The search strategies were "diabetic proteinuria, diabetic microalbuminuria, diabetic albuminuria, diabetic kidney disease, diabetic renal dysfunction, diabetic renal disease, diabetic nephropathy, diabetic complications, and diabetic mellitus, combined with HP." The quality of these involved articles was separately assessed by two investigators using the Newcastle-Ottawa Scale (NOS). Odds ratios (ORs) and associated 95% confidence intervals (CIs) were extracted and pooled using fixed-effects models. RESULTS Seven studies involving 1029 participants were included. The quality of these seven articles was all above five stars as assessed by NOS, and there was no significant publication bias in our meta-analysis. We found that T2DM patients with HP infection had a 2.00 times higher risk of the occurrence of proteinuria than patients without HP infection (OR: 2.00, 95% CI: 1.48-2.69). CONCLUSIONS Our analysis showed that HP infection was associated with the occurrence of proteinuria in T2DM patients. HP radical surgery might be a therapeutic option for protecting kidney function in patients with T2DM.
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Affiliation(s)
- Yan Shi
- Department of Nephrology, Chinese People's Liberation Army General Hospital, Chinese People's Liberation Army Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing 100853, China
- Department of Nephrology, Zhengzhou University; The First Affiliated Hospital of Zhengzhou University, Research Institute of Nephrology, Key Laboratory of Accurate Diagnosis and Treatment of Chronic Kidney Diseases in Henan Province, Core Unit of National Kidney Disease Clinical Medical Research Center, Zhengzhou, Henan 450052, China
| | - Jia-Yu Duan
- Department of Nephrology, Zhengzhou University; The First Affiliated Hospital of Zhengzhou University, Research Institute of Nephrology, Key Laboratory of Accurate Diagnosis and Treatment of Chronic Kidney Diseases in Henan Province, Core Unit of National Kidney Disease Clinical Medical Research Center, Zhengzhou, Henan 450052, China
| | - Dong-Wei Liu
- Department of Nephrology, Zhengzhou University; The First Affiliated Hospital of Zhengzhou University, Research Institute of Nephrology, Key Laboratory of Accurate Diagnosis and Treatment of Chronic Kidney Diseases in Henan Province, Core Unit of National Kidney Disease Clinical Medical Research Center, Zhengzhou, Henan 450052, China
| | - Ying-Jin Qiao
- Department of Nephrology, Zhengzhou University; The First Affiliated Hospital of Zhengzhou University, Research Institute of Nephrology, Key Laboratory of Accurate Diagnosis and Treatment of Chronic Kidney Diseases in Henan Province, Core Unit of National Kidney Disease Clinical Medical Research Center, Zhengzhou, Henan 450052, China
| | - Qiu-Xia Han
- Department of Nephrology, Chinese People's Liberation Army General Hospital, Chinese People's Liberation Army Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing 100853, China
- Department of Nephrology, Zhengzhou University; The First Affiliated Hospital of Zhengzhou University, Research Institute of Nephrology, Key Laboratory of Accurate Diagnosis and Treatment of Chronic Kidney Diseases in Henan Province, Core Unit of National Kidney Disease Clinical Medical Research Center, Zhengzhou, Henan 450052, China
| | - Shao-Kang Pan
- Department of Nephrology, Zhengzhou University; The First Affiliated Hospital of Zhengzhou University, Research Institute of Nephrology, Key Laboratory of Accurate Diagnosis and Treatment of Chronic Kidney Diseases in Henan Province, Core Unit of National Kidney Disease Clinical Medical Research Center, Zhengzhou, Henan 450052, China
| | - Li Tang
- Department of Nephrology, Chinese People's Liberation Army General Hospital, Chinese People's Liberation Army Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing 100853, China
| | - Guang-Yan Cai
- Department of Nephrology, Chinese People's Liberation Army General Hospital, Chinese People's Liberation Army Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing 100853, China
| | - Xiang-Mei Chen
- Department of Nephrology, Chinese People's Liberation Army General Hospital, Chinese People's Liberation Army Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing 100853, China
| | - Zhang-Suo Liu
- Department of Nephrology, Zhengzhou University; The First Affiliated Hospital of Zhengzhou University, Research Institute of Nephrology, Key Laboratory of Accurate Diagnosis and Treatment of Chronic Kidney Diseases in Henan Province, Core Unit of National Kidney Disease Clinical Medical Research Center, Zhengzhou, Henan 450052, China
| | - Han-Yu Zhu
- Department of Nephrology, Chinese People's Liberation Army General Hospital, Chinese People's Liberation Army Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing 100853, China
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GONZÁLEZ I, ARAYA P, ROJAS A. Helicobacter Pylori Infection and Lung Cancer:
New Insights and Future Challenges. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2018; 21:658-662. [PMID: 30201063 PMCID: PMC6137001 DOI: 10.3779/j.issn.1009-3419.2018.09.03] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 06/20/2018] [Accepted: 06/25/2018] [Indexed: 02/07/2023]
Abstract
Helicobacter pylori (H. pylori) is the causative agent of chronic gastritis and peptic ulcer diseases and is an important risk factor for the development functional dyspepsia, peptic ulceration, gastric adenocarcinoma and mucosa-associated lymphoid tissue lymphoma. H. pylori has very high rates of infection in human populations, and it is estimated that over 50% of the world population is infected. Recently, certain extra-gastric manifestations, linked to H. pylori infection, have been widely investigated. Noteworthy, a growing body of evidences supports an association between H. pylori infection with lung cancer. The present review intend to highlight not only the most recent evidences supporting this association, but also some missed points, which must be considered to validate this emerging association.
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Affiliation(s)
- Ileana GONZÁLEZ
- />Biomedical Research Laboratories, Medicine Faculty, Catholic University of Maule, Talca, Chile
| | - Paulina ARAYA
- />Biomedical Research Laboratories, Medicine Faculty, Catholic University of Maule, Talca, Chile
| | - Armando ROJAS
- />Biomedical Research Laboratories, Medicine Faculty, Catholic University of Maule, Talca, Chile
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Salah Ud-Din AIM, Roujeinikova A. Flagellin glycosylation with pseudaminic acid in Campylobacter and Helicobacter: prospects for development of novel therapeutics. Cell Mol Life Sci 2018; 75:1163-1178. [PMID: 29080090 PMCID: PMC11105201 DOI: 10.1007/s00018-017-2696-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 10/10/2017] [Accepted: 10/24/2017] [Indexed: 02/08/2023]
Abstract
Many pathogenic bacteria require flagella-mediated motility to colonise and persist in their hosts. Helicobacter pylori and Campylobacter jejuni are flagellated epsilonproteobacteria associated with several human pathologies, including gastritis, acute diarrhea, gastric carcinoma and neurological disorders. In both species, glycosylation of flagellin with an unusual sugar pseudaminic acid (Pse) plays a crucial role in the biosynthesis of functional flagella, and thereby in bacterial motility and pathogenesis. Pse is found only in pathogenic bacteria. Its biosynthesis via six consecutive enzymatic steps has been extensively studied in H. pylori and C. jejuni. This review highlights the importance of flagella glycosylation and details structural insights into the enzymes in the Pse pathway obtained via a combination of biochemical, crystallographic, and mutagenesis studies of the enzyme-substrate and -inhibitor complexes. It is anticipated that understanding the underlying structural and molecular basis of the catalytic mechanisms of the Pse-synthesising enzymes will pave the way for the development of novel antimicrobials.
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Affiliation(s)
- Abu Iftiaf Md Salah Ud-Din
- Infection and Immunity Program, Monash Biomedicine Discovery Institute and Department of Microbiology, Monash University, Clayton, VIC, Australia
| | - Anna Roujeinikova
- Infection and Immunity Program, Monash Biomedicine Discovery Institute and Department of Microbiology, Monash University, Clayton, VIC, Australia.
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC, Australia.
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10
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Wahid SUH. Structural and functional characterization of the Helicobacter pylori cytidine 5'-monophosphate-pseudaminic acid synthase PseF: molecular insight into substrate recognition and catalysis mechanism. Adv Appl Bioinform Chem 2017; 10:79-88. [PMID: 29062238 PMCID: PMC5638570 DOI: 10.2147/aabc.s139773] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The bacterium Helicobacter pylori is a human gastric pathogen that can cause a wide range of diseases, including chronic gastritis, peptic ulcer and gastric carcinoma. It is classified as a definitive (class I) human carcinogen by the International Agency for Research on Cancer. Flagella-mediated motility is essential for H. pylori to initiate colonization and for the development of infection in human beings. Glycosylation of the H. pylori flagellum with pseudaminic acid (Pse; 5,7-diacetamido-3,5,7,9-tetradeoxy-l-glycero-l-manno-nonulosonic acid) is essential for flagella assembly and function. The sixth step in the Pse biosynthesis pathway, activation of Pse by addition of a cytidine 5'-monophosphate (CMP) to generate CMP-Pse, is catalyzed by a metal-dependent enzyme pseudaminic acid biosynthesis protein F (PseF) using cytidine 5'-triphosphate (CTP) as a cofactor. No crystal-structural information for PseF is available. This study describes the first three-dimensional model of H. pylori PseF obtained using biocomputational tools. PseF harbors an α/β-type hydrolase fold with a β-hairpin (HP) dimerization domain. Comparison of PseF with other structural homologs allowed identification of crucial residues for substrate recognition and the catalytic mechanism. This structural information would pave the way to design novel therapeutics to combat bacterial infection.
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Corlateanu A, Covantev S, Mathioudakis AG, Botnaru V, Siafakas N. Prevalence and burden of comorbidities in Chronic Obstructive Pulmonary Disease. Respir Investig 2016; 54:387-396. [PMID: 27886849 DOI: 10.1016/j.resinv.2016.07.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 07/01/2016] [Indexed: 02/08/2023]
Abstract
The classical definition of Chronic Obstructive Pulmonary Disease (COPD) as a lung condition characterized by irreversible airway obstruction is outdated. The systemic involvement in patients with COPD, as well as the interactions between COPD and its comorbidities, justify the description of chronic systemic inflammatory syndrome. The pathogenesis of COPD is closely linked with aging, as well as with cardiovascular, endocrine, musculoskeletal, renal, and gastrointestinal pathologies, decreasing the quality of life of patients with COPD and, furthermore, complicating the management of the disease. The most frequently described comorbidities include skeletal muscle wasting, cachexia (loss of fat-free mass), lung cancer (small cell or non-small cell), pulmonary hypertension, ischemic heart disease, hyperlipidemia, congestive heart failure, normocytic anemia, diabetes, metabolic syndrome, osteoporosis, obstructive sleep apnea, depression, and arthritis. These complex interactions are based on chronic low-grade systemic inflammation, chronic hypoxia, and multiple common predisposing factors, and are currently under intense research. This review article is an overview of the comorbidities of COPD, as well as their interaction and influence on mutual disease progression, prognosis, and quality of life.
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Affiliation(s)
- Alexandru Corlateanu
- Department of Respiratory Medicine, State University of Medicine and Pharmacy "Nicolae Testemitanu", Stefan cel Mare Street 165, 2004 Chisinau, Republic of Moldova.
| | - Serghei Covantev
- Department of Respiratory Medicine, State University of Medicine and Pharmacy "Nicolae Testemitanu", Stefan cel Mare Street 165, 2004 Chisinau, Republic of Moldova.
| | - Alexander G Mathioudakis
- Chest Centre, Aintree University Hospitals NHS Foundation Trust, Langmoor Lane, Liverpool, Merseyside L9 7AL, United Kingdom.
| | - Victor Botnaru
- Department of Respiratory Medicine, State University of Medicine and Pharmacy "Nicolae Testemitanu", Stefan cel Mare Street 165, 2004 Chisinau, Republic of Moldova.
| | - Nikolaos Siafakas
- University General Hospital, Department of Thoracic Medicine, Stavrakia, 71110 Heraklion, Crete, Greece.
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